Home / 151,431.04-208,975.13-91,002.61

Finding the Fourth Proportional to 151,431.04, 208,975.13 and 91,002.61

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Solution

The fourth proportional to 151,431.04, 208,975.13 and 91,002.61 is: 125,583.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,431.04 : 208,975.13 = 91,002.61 : x
  2. Step 2: Convert to fraction form
    151,431.04/208,975.13 = 91,002.61/x
  3. Step 3: Cross multiply
    151,431.04x = 208,975.13 × 91,002.61
  4. Step 4: Simplify right side
    151,431.04x = 19,017,281,618.90
  5. Step 5: Solve for x
    x = 19,017,281,618.90/151,431.04
  6. Step 6: Final answer
    x = 125,583.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.